Krzysztof Pierko has 5 recorded races from Chicago, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-08-23 | 2025 Chicago Triathlon Olympic | Ultra Marathon | 2:53:34 | 747 |
| 2025-05-18 | 2025 Life Time Chicago Spring Half & 10K Half Marathon | Half Marathon | 1:45:50 | 680 |
| 2024-08-24 | 2024 Chicago Triathlon International | Ultra Marathon | 2:50:17 | 538 |
| 2023-08-27 | 2023 Chicago Triathlon International | Ultra Marathon | 2:18:40 | 682 |
| 2022-08-28 | 2022 Chicago Triathlon International - Individual | Ultra Marathon | 2:57:54 | 774 |